GM Service Manual Online
For 1990-2009 cars only

    Object Number: 902883  Size: SH
  1. Install the lower intake manifold gasket.

  2. Object Number: 1866845  Size: SH
  3. Install the intake manifold assembly.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the intake manifold bolts.
  6. Tighten
    Tighten the intake manifold bolts to 23 N·m (17 lb ft).


    Object Number: 1866844  Size: SH
  7. Connect the fresh air positive crankcase ventilation (PCV) hose to the left camshaft cover fitting.

  8. Object Number: 1866842  Size: SH
  9. Connect the dirty air PCV hose to the intake manifold and the right camshaft cover fitting.

  10. Object Number: 1866840  Size: SH
  11. Install the evaporative (EVAP) solenoid.
  12. Install the EVAP solenoid bolt.
  13. Tighten
    Tighten the EVAP solenoid bolt to 10 N·m (89 lb in).


    Object Number: 1866821  Size: SH
  14. Connect and remove the intake manifold-to-solenoid EVAP hose to the intake manifold and to the EVAP solenoid.
  15. Install the intake manifold-to-solenoid EVAP hose bracket bolt to the intake manifold.
  16. Tighten
    Tighten the intake manifold-to-solenoid EVAP hose bracket bolt to 10 N·m (89 lb in).


    Object Number: 1866820  Size: SH
  17. Connect the vehicle-to-solenoid EVAP hose to the EVAP solenoid.
  18. Install the hose clip to the intake manifold.

  19. Object Number: 1866819  Size: SH
  20. Connect the brake booster hose to the upper intake manifold.

Intake Manifold Installation LY7


    Object Number: 902883  Size: SH
  1. Install the lower intake manifold gasket.

  2. Object Number: 1866845  Size: SH
  3. Install the intake manifold assembly.
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the intake manifold bolts and tighten to 23 N·m (17 lb ft).

  6. Object Number: 1866844  Size: SH
  7. Connect the fresh air positive crankcase ventilation (PCV) hose to the left camshaft cover fitting.

  8. Object Number: 1866842  Size: SH
  9. Connect the dirty air PCV hose to the intake manifold and the right camshaft cover fitting.

  10. Object Number: 1866840  Size: SH
  11. Install the evaporative (EVAP) solenoid.
  12. Install the EVAP solenoid bolt and tighten to 10 N·m (89 lb in).

  13. Object Number: 1866821  Size: SH
  14. Connect and remove the intake manifold-to-solenoid EVAP hose to the intake manifold and to the EVAP solenoid.
  15. Install the intake manifold-to-solenoid EVAP hose bracket bolt to the intake manifold and tighten to 10 N·m (89 lb in).

  16. Object Number: 1866820  Size: SH
  17. Connect the vehicle-to-solenoid EVAP hose to the EVAP solenoid.
  18. Install the hose clip to the intake manifold.

  19. Object Number: 1866819  Size: SH
  20. Connect the brake booster hose to the upper intake manifold.

Intake Manifold Installation LCS


    Object Number: 2137804  Size: SH
  1. Install the NEW intake manifold gasket (1).

  2. Object Number: 2137802  Size: SH
  3. Install the intake manifold assembly (3).
  4. Install the intake manifold bolts (1, 2).
  5. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 2091550  Size: SH
  6. Tighten the intake manifold bolts in the sequence shown.
  7. Tighten the intake manifold bolts in sequence to 23 N·m (17 lb ft).
  8. Tighten the intake manifold bolts a second pass in sequence to 23 N·m (17 lb ft).

  9. Object Number: 2137797  Size: SH
  10. Install the fuel pump cover (2).
  11. Install the fuel pump cover bolt (1) and tighten to 10 N·m (89 lb in).

  12. Object Number: 2137795  Size: SH
  13. Install the evaporative (EVAP) solenoid (1).
  14. Tighten the EVAP solenoid bolt to 10 N·m (89 lb in).

  15. Object Number: 2137794  Size: SH
  16. Connect the EVAP hose to the upper intake manifold and EVAP solenoid.

  17. Object Number: 2137793  Size: SH
  18. Connect the positive crankcase ventilation (PCV) tube assembly (1) to the upper intake manifold and the right camshaft cover.